Charles r



I To all 'whom t may concern:

UNTTED sTATEs PATENT oEEIcE. r

CHARLES R. HARVEY,

OF NEW YORK, N. Y.

AIR-HEATING FUBNACE.

Specification of Letters Patent No.

Be it known that I, CHARLES R. HARVEY, of the city and county of New York and State of New York, have invented a new and Improved Air-Heating Furnace for Warming Dwellings, Stores, Churches, School- I-Iouses, &c.; and I do hereby declare that the following is al full and eXac-t description thereof, reference being had to the drawings that will accompany this specification.

My improvements consist, lirst, in the Inode of constructing and arranging the top` of the fire chamber, by which an equal expansion of all its parts are effective, and the gases are made to reverberate and consume, the draft flue being projected down into the center of the chamber, so that an equal reverbratory action takes place from all sides to the exit pipe at the center, lthus attaining all the advantages of aI diving Hue, without the inconvenience from unequal attraction of thecurrents of heat, &c., to one side, and the irregular expansionand contraction attendant thereon. By `means of this construction the flame. and heat 'f of the ire are allowed to ascend, and are then compelled to reverberate in the top or dome B, whence they descend and pass off at the center, a plan that I have found to consume the gases more perfectly, and give out their heat more entirely than in any other way, an effect which has been only partly attained heretofore.

The arrangement of the' radiating pipes are of diamond form in connection with the ash panbelow, byy which the ashes can be entirely cleared out from the radiating pipes D; the general features of which are not new, or claimedby me; this radiating pipe chamber is a recess E, forming an evaporat- 1o,44*7, dated Januaryai, 1854.

D is so arranged, that when the damper (a) is shut, the smoke and heat is compelled to pass around the circuitous turns in they winding pipe through the air chamber within which it is coiled. This part of the pipe is constructed withelbows turning at nearly '-45 right angles, by which the hea-t is more fully absorbed, and the radiating power lthus more entirely exhausted. The lower angles of this radiating pipe D, are each connected witha long horizontal soot chamber C, when the lattice valve is open; this valve, however, isl generally closed, and is always so when the furnace is in action; but when the pipes are to be cleaned, the valve is drawn back, opening the division ybetween each of the pipes D, and the sootboX; and then by beating upon the pipes all the soo-t, &c., islnade to fall into the soot boX C, below, from whence it is easily removed. without in any way disturbing the pipes D; around the s oot ingv pan.

Having thus fully described my improvement in the air-heating furnace, I wish it to be understood that I donot claim a diving flue, or a coil of heating pipe, as they are both well known devices: but

What I do claim as my invention, is- Constructing the bonnet or top 'of the lire chamber, with a depression at the center, into which the smoke or eXit pipe enters, so that the heatk is equalized all around, and the expansion and contraction ismade uni'- form, as abovefspecied. Y 'e C. R. IIARVEY. Witnesses:

Trios. E. WARREN,

T. HATsELL. 

